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dhafemann
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PostPosted: Wed May 22, 2002 5:24 am    Post subject: Gentoo + FrameBuffer devices? Reply with quote

I'm running Gentoo with kernel version 2.4.18. I have framebuffer devices enabled in the kernel (and I'm pretty sure it's done correctly, I paid attention to the HOWTO on linuxdoc.org), but they're not working quite right. When I select a screen mode, the video flickers and the text is re-drawn correctly, but a few seconds later, it reverts back to the default screen mode.

Have any other Gentoo users seen this before, or am I in the wrong forum?
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PostPosted: Wed May 22, 2002 6:42 pm    Post subject: Reply with quote

Have you tried different resolutions for your fb?
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dhafemann
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PostPosted: Thu May 23, 2002 1:36 am    Post subject: Reply with quote

I'm not sure I understand your suggestion. My lilo configuration uses 'vga=ask', so I choose my own scan mode at each boot, if that's what you're talking about. I've tried more than 1 of the scan modes,and each one had the same result. If that's not what you're talking about, then I'm lost.
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chadh
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PostPosted: Thu May 23, 2002 3:52 am    Post subject: Reply with quote

I'd suggest that you specify a VGA mode through the vga= command, rather than the "ask" option. Take a look at /usr/src/linux/Documentation/fb/vesafb.txt for a list of resolutions that you can specify to vga=.
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PostPosted: Thu May 23, 2002 2:08 pm    Post subject: Reply with quote

Yep you can try this for a nice 1024x768 console:
Code:

vga=773

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dhafemann
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PostPosted: Thu May 23, 2002 6:41 pm    Post subject: Reply with quote

I've tried passing values in the lilo configuration, but even when i have a vga=### instead of 'ask', it still shows me the menu for entering my own scan mode.
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craftyc
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PostPosted: Thu May 23, 2002 7:04 pm    Post subject: Reply with quote

Silly question, but did you restart lilo (by typing lilo at the command promtp). I don't mean to insult your intelligence, it's just that that is what I think would solve the problem.
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PostPosted: Thu May 23, 2002 10:03 pm    Post subject: Reply with quote

One thing you might want to check is which driver you're using.

I had somewhat similar problems with my laptop (Dell Latitude CP), which worked fine with several other distributions, so I was pretty sure it was not a hardware problem.

I eventually tracked it down to the fact that I was using the "neofb" driver (seeing as how I had a NeoMagic 128 video "card").

I took that out of the config for the kernel, but left vesa FB support on. This caused it to use the vesafb driver, which has worked fine.
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